[sdiy] Heat shrink tubing driving me crazy....

[Dave Kendall]

FWIW, back in 1984 I worked at an electronics factory as a driver, and 
once had to load up the skip (dumpster) with unused, unwanted stuff 
because of the imminent move to another premises. Amongst the haul I 
got was loads of pre-cut heatshrink, except that some types/lengths of 
it wouldn't shrink. It had a very slight gluey layer inside, which 
melted and then solidified when heated - all I can think is that it 
*wasn't* heatshrink  but some sort of 'covering' - perhaps it was 
designed as something that wouldn't shrink then split after sticking, 
as heatshrink can often do when heated again, or when it's heated so 
that its internal shrunk diameter is less than the cable it's 
surrounding. It's certainly tougher than regular heatshrink under 
heat...It was also thin-walled, unlike heatshrink that has been shrunk 
already.
All the stuff was new then, and I'm still using what's left of the 
proper heatshrink stuff to this day.


Cheers,
Dave

On Dec 20, 2007, at 22:05, Tom Adam wrote:

> I've got this heatshrink recently that just doesn't shrink. I admit I 
> don't have a heat gun or other proper tool, so I use my soldering iron 
> as heat source. But this tubing wont even shrink when doing the 
> "lighter" trick.
> Anyway this got me thinking, some time ago I was having problems with 
> a +/-15V toroid transfo and it turned out the wires where coated with 
> something. After scratching the surface the transfo worked perfectly. 
> So does this coating stuff exists as a spray or something alike? Would 
> solve my problem perfectly. It's probably a very nasty chemical 
> product, but I can't imagine that the fumes from burning heat shrink 
> is healthy too...
>
> Cheers,
> ToAd
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>